com.lowagie.text.pdf.XfaForm Maven / Gradle / Ivy
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/*
* $Id: XfaForm.java 4105 2009-11-27 12:52:57Z blowagie $
*
* Copyright 2006 Paulo Soares
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.pdf;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.EmptyStackException;
import java.util.HashMap;
import java.util.Iterator;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import com.lowagie.text.xml.XmlDomWriter;
/**
* Processes XFA forms.
* @author Paulo Soares ([email protected])
*/
public class XfaForm {
private Xml2SomTemplate templateSom;
private Node templateNode;
private Xml2SomDatasets datasetsSom;
private Node datasetsNode;
private AcroFieldsSearch acroFieldsSom;
private PdfReader reader;
private boolean xfaPresent;
private org.w3c.dom.Document domDocument;
private boolean changed;
public static final String XFA_DATA_SCHEMA = "http://www.xfa.org/schema/xfa-data/1.0/";
/**
* An empty constructor to build on.
*/
public XfaForm() {
}
/**
* Return the XFA Object, could be an array, could be a Stream.
* Returns null f no XFA Object is present.
* @param reader a PdfReader instance
* @return the XFA object
* @since 2.1.3
*/
public static PdfObject getXfaObject(PdfReader reader) {
PdfDictionary af = (PdfDictionary)PdfReader.getPdfObjectRelease(reader.getCatalog().get(PdfName.ACROFORM));
if (af == null) {
return null;
}
return PdfReader.getPdfObjectRelease(af.get(PdfName.XFA));
}
/**
* A constructor from a PdfReader. It basically does everything
* from finding the XFA stream to the XML parsing.
* @param reader the reader
* @throws java.io.IOException on error
* @throws javax.xml.parsers.ParserConfigurationException on error
* @throws org.xml.sax.SAXException on error
*/
public XfaForm(PdfReader reader) throws IOException, ParserConfigurationException, SAXException {
this.reader = reader;
PdfObject xfa = getXfaObject(reader);
if (xfa == null) {
xfaPresent = false;
return;
}
xfaPresent = true;
ByteArrayOutputStream bout = new ByteArrayOutputStream();
if (xfa.isArray()) {
PdfArray ar = (PdfArray)xfa;
for (int k = 1; k < ar.size(); k += 2) {
PdfObject ob = ar.getDirectObject(k);
if (ob instanceof PRStream) {
byte[] b = PdfReader.getStreamBytes((PRStream)ob);
bout.write(b);
}
}
}
else if (xfa instanceof PRStream) {
byte[] b = PdfReader.getStreamBytes((PRStream)xfa);
bout.write(b);
}
bout.close();
DocumentBuilderFactory fact = DocumentBuilderFactory.newInstance();
fact.setNamespaceAware(true);
DocumentBuilder db = fact.newDocumentBuilder();
domDocument = db.parse(new ByteArrayInputStream(bout.toByteArray()));
extractNodes();
}
/**
* Extracts the nodes from the domDocument.
* @since 2.1.5
*/
private void extractNodes() {
Node n = domDocument.getFirstChild();
while (n.getChildNodes().getLength() == 0) {
n = n.getNextSibling();
}
n = n.getFirstChild();
while (n != null) {
if (n.getNodeType() == Node.ELEMENT_NODE) {
String s = n.getLocalName();
if (s.equals("template")) {
templateNode = n;
templateSom = new Xml2SomTemplate(n);
}
else if (s.equals("datasets")) {
datasetsNode = n;
datasetsSom = new Xml2SomDatasets(n.getFirstChild());
}
}
n = n.getNextSibling();
}
}
/**
* Sets the XFA key from a byte array. The old XFA is erased.
* @param form the data
* @param reader the reader
* @param writer the writer
* @throws java.io.IOException on error
*/
public static void setXfa(XfaForm form, PdfReader reader, PdfWriter writer) throws IOException {
PdfDictionary af = (PdfDictionary)PdfReader.getPdfObjectRelease(reader.getCatalog().get(PdfName.ACROFORM));
if (af == null) {
return;
}
PdfObject xfa = getXfaObject(reader);
if (xfa.isArray()) {
PdfArray ar = (PdfArray)xfa;
int t = -1;
int d = -1;
for (int k = 0; k < ar.size(); k += 2) {
PdfString s = ar.getAsString(k);
if ("template".equals(s.toString())) {
t = k + 1;
}
if ("datasets".equals(s.toString())) {
d = k + 1;
}
}
if (t > -1 && d > -1) {
reader.killXref(ar.getAsIndirectObject(t));
reader.killXref(ar.getAsIndirectObject(d));
PdfStream tStream = new PdfStream(serializeDoc(form.templateNode));
tStream.flateCompress(writer.getCompressionLevel());
ar.set(t, writer.addToBody(tStream).getIndirectReference());
PdfStream dStream = new PdfStream(serializeDoc(form.datasetsNode));
dStream.flateCompress(writer.getCompressionLevel());
ar.set(d, writer.addToBody(dStream).getIndirectReference());
af.put(PdfName.XFA, new PdfArray(ar));
return;
}
}
reader.killXref(af.get(PdfName.XFA));
PdfStream str = new PdfStream(serializeDoc(form.domDocument));
str.flateCompress(writer.getCompressionLevel());
PdfIndirectReference ref = writer.addToBody(str).getIndirectReference();
af.put(PdfName.XFA, ref);
}
/**
* Sets the XFA key from the instance data. The old XFA is erased.
* @param writer the writer
* @throws java.io.IOException on error
*/
public void setXfa(PdfWriter writer) throws IOException {
setXfa(this, reader, writer);
}
/**
* Serializes a XML document to a byte array.
* @param n the XML document
* @throws java.io.IOException on error
* @return the serialized XML document
*/
public static byte[] serializeDoc(Node n) throws IOException {
XmlDomWriter xw = new XmlDomWriter();
ByteArrayOutputStream fout = new ByteArrayOutputStream();
xw.setOutput(fout, null);
xw.setCanonical(false);
xw.write(n);
fout.close();
return fout.toByteArray();
}
/**
* Returns true if it is a XFA form.
* @return true if it is a XFA form
*/
public boolean isXfaPresent() {
return xfaPresent;
}
/**
* Gets the top level DOM document.
* @return the top level DOM document
*/
public org.w3c.dom.Document getDomDocument() {
return domDocument;
}
/**
* Finds the complete field name contained in the "classic" forms from a partial
* name.
* @param name the complete or partial name
* @param af the fields
* @return the complete name or null if not found
*/
public String findFieldName(String name, AcroFields af) {
HashMap items = af.getFields();
if (items.containsKey(name))
return name;
if (acroFieldsSom == null) {
if (items.isEmpty() && xfaPresent)
acroFieldsSom = new AcroFieldsSearch(datasetsSom.getName2Node().keySet());
else
acroFieldsSom = new AcroFieldsSearch(items.keySet());
}
if (acroFieldsSom.getAcroShort2LongName().containsKey(name))
return (String)acroFieldsSom.getAcroShort2LongName().get(name);
return acroFieldsSom.inverseSearchGlobal(Xml2Som.splitParts(name));
}
/**
* Finds the complete SOM name contained in the datasets section from a
* possibly partial name.
* @param name the complete or partial name
* @return the complete name or null if not found
*/
public String findDatasetsName(String name) {
if (datasetsSom.getName2Node().containsKey(name))
return name;
return datasetsSom.inverseSearchGlobal(Xml2Som.splitParts(name));
}
/**
* Finds the Node contained in the datasets section from a
* possibly partial name.
* @param name the complete or partial name
* @return the Node or null if not found
*/
public Node findDatasetsNode(String name) {
if (name == null)
return null;
name = findDatasetsName(name);
if (name == null)
return null;
return (Node)datasetsSom.getName2Node().get(name);
}
/**
* Gets all the text contained in the child nodes of this node.
* @param n the Node
* @return the text found or "" if no text was found
*/
public static String getNodeText(Node n) {
if (n == null)
return "";
return getNodeText(n, "");
}
private static String getNodeText(Node n, String name) {
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
name = getNodeText(n2, name);
}
else if (n2.getNodeType() == Node.TEXT_NODE) {
name += n2.getNodeValue();
}
n2 = n2.getNextSibling();
}
return name;
}
/**
* Sets the text of this node. All the child's node are deleted and a new
* child text node is created.
* @param n the Node to add the text to
* @param text the text to add
*/
public void setNodeText(Node n, String text) {
if (n == null)
return;
Node nc = null;
while ((nc = n.getFirstChild()) != null) {
n.removeChild(nc);
}
if (n.getAttributes().getNamedItemNS(XFA_DATA_SCHEMA, "dataNode") != null)
n.getAttributes().removeNamedItemNS(XFA_DATA_SCHEMA, "dataNode");
n.appendChild(domDocument.createTextNode(text));
changed = true;
}
/**
* Sets the XFA form flag signaling that this is a valid XFA form.
* @param xfaPresent the XFA form flag signaling that this is a valid XFA form
*/
public void setXfaPresent(boolean xfaPresent) {
this.xfaPresent = xfaPresent;
}
/**
* Sets the top DOM document.
* @param domDocument the top DOM document
*/
public void setDomDocument(org.w3c.dom.Document domDocument) {
this.domDocument = domDocument;
extractNodes();
}
/**
* Gets the PdfReader used by this instance.
* @return the PdfReader used by this instance
*/
public PdfReader getReader() {
return reader;
}
/**
* Sets the PdfReader to be used by this instance.
* @param reader the PdfReader to be used by this instance
*/
public void setReader(PdfReader reader) {
this.reader = reader;
}
/**
* Checks if this XFA form was changed.
* @return true if this XFA form was changed
*/
public boolean isChanged() {
return changed;
}
/**
* Sets the changed status of this XFA instance.
* @param changed the changed status of this XFA instance
*/
public void setChanged(boolean changed) {
this.changed = changed;
}
/**
* A structure to store each part of a SOM name and link it to the next part
* beginning from the lower hierarchy.
*/
public static class InverseStore {
protected ArrayList part = new ArrayList();
protected ArrayList follow = new ArrayList();
/**
* Gets the full name by traversing the hierarchy using only the
* index 0.
* @return the full name
*/
public String getDefaultName() {
InverseStore store = this;
while (true) {
Object obj = store.follow.get(0);
if (obj instanceof String)
return (String)obj;
store = (InverseStore)obj;
}
}
/**
* Search the current node for a similar name. A similar name starts
* with the same name but has a different index. For example, "detail[3]"
* is similar to "detail[9]". The main use is to discard names that
* correspond to out of bounds records.
* @param name the name to search
* @return true if a similitude was found
*/
public boolean isSimilar(String name) {
int idx = name.indexOf('[');
name = name.substring(0, idx + 1);
for (int k = 0; k < part.size(); ++k) {
if (((String)part.get(k)).startsWith(name))
return true;
}
return false;
}
}
/**
* Another stack implementation. The main use is to facilitate
* the porting to other languages.
*/
public static class Stack2 extends ArrayList {
private static final long serialVersionUID = -7451476576174095212L;
/**
* Looks at the object at the top of this stack without removing it from the stack.
* @return the object at the top of this stack
*/
public Object peek() {
if (size() == 0)
throw new EmptyStackException();
return get(size() - 1);
}
/**
* Removes the object at the top of this stack and returns that object as the value of this function.
* @return the object at the top of this stack
*/
public Object pop() {
if (size() == 0)
throw new EmptyStackException();
Object ret = get(size() - 1);
remove(size() - 1);
return ret;
}
/**
* Pushes an item onto the top of this stack.
* @param item the item to be pushed onto this stack
* @return the item argument
*/
public Object push(Object item) {
add(item);
return item;
}
/**
* Tests if this stack is empty.
* @return true if and only if this stack contains no items; false otherwise
*/
public boolean empty() {
return size() == 0;
}
}
/**
* A class for some basic SOM processing.
*/
public static class Xml2Som {
/**
* The order the names appear in the XML, depth first.
*/
protected ArrayList order;
/**
* The mapping of full names to nodes.
*/
protected HashMap name2Node;
/**
* The data to do a search from the bottom hierarchy.
*/
protected HashMap inverseSearch;
/**
* A stack to be used when parsing.
*/
protected Stack2 stack;
/**
* A temporary store for the repetition count.
*/
protected int anform;
/**
* Escapes a SOM string fragment replacing "." with "\.".
* @param s the unescaped string
* @return the escaped string
*/
public static String escapeSom(String s) {
if(s==null)
return "";
int idx = s.indexOf('.');
if (idx < 0)
return s;
StringBuffer sb = new StringBuffer();
int last = 0;
while (idx >= 0) {
sb.append(s.substring(last, idx));
sb.append('\\');
last = idx;
idx = s.indexOf('.', idx + 1);
}
sb.append(s.substring(last));
return sb.toString();
}
/**
* Unescapes a SOM string fragment replacing "\." with ".".
* @param s the escaped string
* @return the unescaped string
*/
public static String unescapeSom(String s) {
int idx = s.indexOf('\\');
if (idx < 0)
return s;
StringBuffer sb = new StringBuffer();
int last = 0;
while (idx >= 0) {
sb.append(s.substring(last, idx));
last = idx + 1;
idx = s.indexOf('\\', idx + 1);
}
sb.append(s.substring(last));
return sb.toString();
}
/**
* Outputs the stack as the sequence of elements separated
* by '.'.
* @return the stack as the sequence of elements separated by '.'
*/
protected String printStack() {
if (stack.empty())
return "";
StringBuffer s = new StringBuffer();
for (int k = 0; k < stack.size(); ++k)
s.append('.').append((String)stack.get(k));
return s.substring(1);
}
/**
* Gets the name with the #subform removed.
* @param s the long name
* @return the short name
*/
public static String getShortName(String s) {
int idx = s.indexOf(".#subform[");
if (idx < 0)
return s;
int last = 0;
StringBuffer sb = new StringBuffer();
while (idx >= 0) {
sb.append(s.substring(last, idx));
idx = s.indexOf("]", idx + 10);
if (idx < 0)
return sb.toString();
last = idx + 1;
idx = s.indexOf(".#subform[", last);
}
sb.append(s.substring(last));
return sb.toString();
}
/**
* Adds a SOM name to the search node chain.
* @param unstack the SOM name
*/
public void inverseSearchAdd(String unstack) {
inverseSearchAdd(inverseSearch, stack, unstack);
}
/**
* Adds a SOM name to the search node chain.
* @param inverseSearch the start point
* @param stack the stack with the separated SOM parts
* @param unstack the full name
*/
public static void inverseSearchAdd(HashMap inverseSearch, Stack2 stack, String unstack) {
String last = (String)stack.peek();
InverseStore store = (InverseStore)inverseSearch.get(last);
if (store == null) {
store = new InverseStore();
inverseSearch.put(last, store);
}
for (int k = stack.size() - 2; k >= 0; --k) {
last = (String)stack.get(k);
InverseStore store2;
int idx = store.part.indexOf(last);
if (idx < 0) {
store.part.add(last);
store2 = new InverseStore();
store.follow.add(store2);
}
else
store2 = (InverseStore)store.follow.get(idx);
store = store2;
}
store.part.add("");
store.follow.add(unstack);
}
/**
* Searches the SOM hierarchy from the bottom.
* @param parts the SOM parts
* @return the full name or null if not found
*/
public String inverseSearchGlobal(ArrayList parts) {
if (parts.isEmpty())
return null;
InverseStore store = (InverseStore)inverseSearch.get(parts.get(parts.size() - 1));
if (store == null)
return null;
for (int k = parts.size() - 2; k >= 0; --k) {
String part = (String)parts.get(k);
int idx = store.part.indexOf(part);
if (idx < 0) {
if (store.isSimilar(part))
return null;
return store.getDefaultName();
}
store = (InverseStore)store.follow.get(idx);
}
return store.getDefaultName();
}
/**
* Splits a SOM name in the individual parts.
* @param name the full SOM name
* @return the split name
*/
public static Stack2 splitParts(String name) {
while (name.startsWith("."))
name = name.substring(1);
Stack2 parts = new Stack2();
int last = 0;
int pos = 0;
String part;
while (true) {
pos = last;
while (true) {
pos = name.indexOf('.', pos);
if (pos < 0)
break;
if (name.charAt(pos - 1) == '\\')
++pos;
else
break;
}
if (pos < 0)
break;
part = name.substring(last, pos);
if (!part.endsWith("]"))
part += "[0]";
parts.add(part);
last = pos + 1;
}
part = name.substring(last);
if (!part.endsWith("]"))
part += "[0]";
parts.add(part);
return parts;
}
/**
* Gets the order the names appear in the XML, depth first.
* @return the order the names appear in the XML, depth first
*/
public ArrayList getOrder() {
return order;
}
/**
* Sets the order the names appear in the XML, depth first
* @param order the order the names appear in the XML, depth first
*/
public void setOrder(ArrayList order) {
this.order = order;
}
/**
* Gets the mapping of full names to nodes.
* @return the mapping of full names to nodes
*/
public HashMap getName2Node() {
return name2Node;
}
/**
* Sets the mapping of full names to nodes.
* @param name2Node the mapping of full names to nodes
*/
public void setName2Node(HashMap name2Node) {
this.name2Node = name2Node;
}
/**
* Gets the data to do a search from the bottom hierarchy.
* @return the data to do a search from the bottom hierarchy
*/
public HashMap getInverseSearch() {
return inverseSearch;
}
/**
* Sets the data to do a search from the bottom hierarchy.
* @param inverseSearch the data to do a search from the bottom hierarchy
*/
public void setInverseSearch(HashMap inverseSearch) {
this.inverseSearch = inverseSearch;
}
}
/**
* Processes the datasets section in the XFA form.
*/
public static class Xml2SomDatasets extends Xml2Som {
/**
* Creates a new instance from the datasets node. This expects
* not the datasets but the data node that comes below.
* @param n the datasets node
*/
public Xml2SomDatasets(Node n) {
order = new ArrayList();
name2Node = new HashMap();
stack = new Stack2();
anform = 0;
inverseSearch = new HashMap();
processDatasetsInternal(n);
}
/**
* Inserts a new Node that will match the short name.
* @param n the datasets top Node
* @param shortName the short name
* @return the new Node of the inserted name
*/
public Node insertNode(Node n, String shortName) {
Stack2 stack = splitParts(shortName);
org.w3c.dom.Document doc = n.getOwnerDocument();
Node n2 = null;
n = n.getFirstChild();
for (int k = 0; k < stack.size(); ++k) {
String part = (String)stack.get(k);
int idx = part.lastIndexOf('[');
String name = part.substring(0, idx);
idx = Integer.parseInt(part.substring(idx + 1, part.length() - 1));
int found = -1;
for (n2 = n.getFirstChild(); n2 != null; n2 = n2.getNextSibling()) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
String s = escapeSom(n2.getLocalName());
if (s.equals(name)) {
++found;
if (found == idx)
break;
}
}
}
for (; found < idx; ++found) {
n2 = doc.createElementNS(null, name);
n2 = n.appendChild(n2);
Node attr = doc.createAttributeNS(XFA_DATA_SCHEMA, "dataNode");
attr.setNodeValue("dataGroup");
n2.getAttributes().setNamedItemNS(attr);
}
n = n2;
}
inverseSearchAdd(inverseSearch, stack, shortName);
name2Node.put(shortName, n2);
order.add(shortName);
return n2;
}
private static boolean hasChildren(Node n) {
Node dataNodeN = n.getAttributes().getNamedItemNS(XFA_DATA_SCHEMA, "dataNode");
if (dataNodeN != null) {
String dataNode = dataNodeN.getNodeValue();
if ("dataGroup".equals(dataNode))
return true;
else if ("dataValue".equals(dataNode))
return false;
}
if (!n.hasChildNodes())
return false;
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
return true;
}
n2 = n2.getNextSibling();
}
return false;
}
private void processDatasetsInternal(Node n) {
HashMap ss = new HashMap();
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
String s = escapeSom(n2.getLocalName());
Integer i = (Integer)ss.get(s);
if (i == null)
i = new Integer(0);
else
i = new Integer(i.intValue() + 1);
ss.put(s, i);
if (hasChildren(n2)) {
stack.push(s + "[" + i.toString() + "]");
processDatasetsInternal(n2);
stack.pop();
}
else {
stack.push(s + "[" + i.toString() + "]");
String unstack = printStack();
order.add(unstack);
inverseSearchAdd(unstack);
name2Node.put(unstack, n2);
stack.pop();
}
}
n2 = n2.getNextSibling();
}
}
}
/**
* A class to process "classic" fields.
*/
public static class AcroFieldsSearch extends Xml2Som {
private HashMap acroShort2LongName;
/**
* Creates a new instance from a Collection with the full names.
* @param items the Collection
*/
public AcroFieldsSearch(Collection items) {
inverseSearch = new HashMap();
acroShort2LongName = new HashMap();
for (Iterator it = items.iterator(); it.hasNext();) {
String itemName = (String)it.next();
String itemShort = getShortName(itemName);
acroShort2LongName.put(itemShort, itemName);
inverseSearchAdd(inverseSearch, splitParts(itemShort), itemName);
}
}
/**
* Gets the mapping from short names to long names. A long
* name may contain the #subform name part.
* @return the mapping from short names to long names
*/
public HashMap getAcroShort2LongName() {
return acroShort2LongName;
}
/**
* Sets the mapping from short names to long names. A long
* name may contain the #subform name part.
* @param acroShort2LongName the mapping from short names to long names
*/
public void setAcroShort2LongName(HashMap acroShort2LongName) {
this.acroShort2LongName = acroShort2LongName;
}
}
/**
* Processes the template section in the XFA form.
*/
public static class Xml2SomTemplate extends Xml2Som {
private boolean dynamicForm;
private int templateLevel;
/**
* Creates a new instance from the datasets node.
* @param n the template node
*/
public Xml2SomTemplate(Node n) {
order = new ArrayList();
name2Node = new HashMap();
stack = new Stack2();
anform = 0;
templateLevel = 0;
inverseSearch = new HashMap();
processTemplate(n, null);
}
/**
* Gets the field type as described in the template section of the XFA.
* @param s the exact template name
* @return the field type or null if not found
*/
public String getFieldType(String s) {
Node n = (Node)name2Node.get(s);
if (n == null)
return null;
if (n.getLocalName().equals("exclGroup"))
return "exclGroup";
Node ui = n.getFirstChild();
while (ui != null) {
if (ui.getNodeType() == Node.ELEMENT_NODE && ui.getLocalName().equals("ui")) {
break;
}
ui = ui.getNextSibling();
}
if (ui == null)
return null;
Node type = ui.getFirstChild();
while (type != null) {
if (type.getNodeType() == Node.ELEMENT_NODE && !(type.getLocalName().equals("extras") && type.getLocalName().equals("picture"))) {
return type.getLocalName();
}
type = type.getNextSibling();
}
return null;
}
private void processTemplate(Node n, HashMap ff) {
if (ff == null)
ff = new HashMap();
HashMap ss = new HashMap();
Node n2 = n.getFirstChild();
while (n2 != null) {
if (n2.getNodeType() == Node.ELEMENT_NODE) {
String s = n2.getLocalName();
if (s.equals("subform")) {
Node name = n2.getAttributes().getNamedItem("name");
String nn = "#subform";
boolean annon = true;
if (name != null) {
nn = escapeSom(name.getNodeValue());
annon = false;
}
Integer i;
if (annon) {
i = new Integer(anform);
++anform;
}
else {
i = (Integer)ss.get(nn);
if (i == null)
i = new Integer(0);
else
i = new Integer(i.intValue() + 1);
ss.put(nn, i);
}
stack.push(nn + "[" + i.toString() + "]");
++templateLevel;
if (annon)
processTemplate(n2, ff);
else
processTemplate(n2, null);
--templateLevel;
stack.pop();
}
else if (s.equals("field") || s.equals("exclGroup")) {
Node name = n2.getAttributes().getNamedItem("name");
if (name != null) {
String nn = escapeSom(name.getNodeValue());
Integer i = (Integer)ff.get(nn);
if (i == null)
i = new Integer(0);
else
i = new Integer(i.intValue() + 1);
ff.put(nn, i);
stack.push(nn + "[" + i.toString() + "]");
String unstack = printStack();
order.add(unstack);
inverseSearchAdd(unstack);
name2Node.put(unstack, n2);
stack.pop();
}
}
else if (!dynamicForm && templateLevel > 0 && s.equals("occur")) {
int initial = 1;
int min = 1;
int max = 1;
Node a = n2.getAttributes().getNamedItem("initial");
if (a != null)
try{initial = Integer.parseInt(a.getNodeValue().trim());}catch(Exception e){}
a = n2.getAttributes().getNamedItem("min");
if (a != null)
try{min = Integer.parseInt(a.getNodeValue().trim());}catch(Exception e){}
a = n2.getAttributes().getNamedItem("max");
if (a != null)
try{max = Integer.parseInt(a.getNodeValue().trim());}catch(Exception e){}
if (initial != min || min != max)
dynamicForm = true;
}
}
n2 = n2.getNextSibling();
}
}
/**
* true if it's a dynamic form; false
* if it's a static form.
* @return true if it's a dynamic form; false
* if it's a static form
*/
public boolean isDynamicForm() {
return dynamicForm;
}
/**
* Sets the dynamic form flag. It doesn't change the template.
* @param dynamicForm the dynamic form flag
*/
public void setDynamicForm(boolean dynamicForm) {
this.dynamicForm = dynamicForm;
}
}
/**
* Gets the class that contains the template processing section of the XFA.
* @return the class that contains the template processing section of the XFA
*/
public Xml2SomTemplate getTemplateSom() {
return templateSom;
}
/**
* Sets the class that contains the template processing section of the XFA
* @param templateSom the class that contains the template processing section of the XFA
*/
public void setTemplateSom(Xml2SomTemplate templateSom) {
this.templateSom = templateSom;
}
/**
* Gets the class that contains the datasets processing section of the XFA.
* @return the class that contains the datasets processing section of the XFA
*/
public Xml2SomDatasets getDatasetsSom() {
return datasetsSom;
}
/**
* Sets the class that contains the datasets processing section of the XFA.
* @param datasetsSom the class that contains the datasets processing section of the XFA
*/
public void setDatasetsSom(Xml2SomDatasets datasetsSom) {
this.datasetsSom = datasetsSom;
}
/**
* Gets the class that contains the "classic" fields processing.
* @return the class that contains the "classic" fields processing
*/
public AcroFieldsSearch getAcroFieldsSom() {
return acroFieldsSom;
}
/**
* Sets the class that contains the "classic" fields processing.
* @param acroFieldsSom the class that contains the "classic" fields processing
*/
public void setAcroFieldsSom(AcroFieldsSearch acroFieldsSom) {
this.acroFieldsSom = acroFieldsSom;
}
/**
* Gets the Node that corresponds to the datasets part.
* @return the Node that corresponds to the datasets part
*/
public Node getDatasetsNode() {
return datasetsNode;
}
public void fillXfaForm(File file) throws ParserConfigurationException, SAXException, IOException {
fillXfaForm(new FileInputStream(file));
}
public void fillXfaForm(InputStream is) throws ParserConfigurationException, SAXException, IOException {
fillXfaForm(new InputSource(is));
}
public void fillXfaForm(InputSource is) throws ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document newdoc = db.parse(is);
fillXfaForm(newdoc.getDocumentElement());
}
/**
* Replaces the data under datasets/data.
* @since iText 5.0.0
*/
public void fillXfaForm(Node node) {
Node data = datasetsNode.getFirstChild();
NodeList list = data.getChildNodes();
if (list.getLength() == 0) {
data.appendChild(domDocument.importNode(node, true));
}
else {
data.replaceChild(domDocument.importNode(node, true), data.getFirstChild());
}
extractNodes();
setChanged(true);
}
}